Swaging machines



y 1956 H. SIMPSON ET AL 2,747,442

SWAGING MACHINES Filed July 5, 1951 5 Sheets-Sheet 1 May 29, 1956 H. SIMPSON ETAL SWAGING MACHINES 5 Sheets-Sheet 2 Filed July 3, 1951 May 29, 1956 H. SIMPSON ETAL SWAGING MACHINES 5 Sheets-Sheet 5 Filed July 3, 1951 May 29, 1956 H. SIMPSON ETAL SWAGING MACHINES Filed July 5, 1951 5 Sheets-Sheet 4 May 29, 1956 H. SIMPSON ETAL SWAGING MACHINES 5 Sheets-Sheet Filed July 3, 1951 United tates Fatent 6 SWAGING MACHINES Harold Simpson and John T. D. Spence, Kidderminster, England, assignor to National Standard Company Limited, Kidderrninster, England, a British company Application July 3, 1951, Serial No. 234,922

7 Claims. (Cl. 78-21) In our co-pending U. S. application Serial No. 208,522, filed January 30, 1951, now abandoned as of July 1953, we have described a method of manufacturing bead wires for tyres in which the two ends of a length of wire are joined together solely by means of a continuous sleeve secured to the ends of the wire by cold swaging or other cold working process.

The present invention relates to a swaging machine which is particularly suitable for carrying out the swaging operation mentioned in the process according to the said U. S. application No. 208,522, now abandoned as of July 1953.

Rotary swaging machines have already been proposed which consist of a hardened steel ring mounted in a suitable housing, a revolving head mounted within the said ring for rotation about an axis coincident with the axis of the ring, said revolving head comprising two aligned hammers, lying in the plane of the ring one on either side of the axis of revolution of the head, and a plurality of steel rollers, housed in a suitable cage, interposed between the internal surface of the said ring and the revolving head. The two hammers each carry a die at their inner end. As the revolving head rotates the two hammers are subjected to a radial displacement as the outer ends of the hammers pass from one roller to another, the rollers being so spaced that the two hammers both move radially outwards or radially inwards together. These radial movements of the hammers cause the dies to alternately approach and separate from one another. The frequency of movement of the dies will depend upon the speed of revolution of the revolving head and the number of rollers whilst the amplitude of the die movement will depend upon the diameter and spacing of the rollers and the contour of the outer ends of the hammers. Whilst such a swaging machine is suitable for joining two lengths of wire or the like together by swaging a sleeve to an end of each piece of wire, it is not suitable for joining together the two ends of a single length of wire, for once the joint has been made the wire loop cannot be removed from the swaging machine.

For the swaging together of the two ends of a single length of wire it has been the practice hitherto to employ a stationary swaging machine comprising reciprocating dies actuated by aligned opposed rams or the like. The joint being swaged has to be fed through the die and at the same time it has to be rotated manually between the dies. if the ends of a long length of material are to be swaged together the swaging operation becomes very difficult owing to the large size of the loop of material which has to be rotated relative to the dies. Another disadvantage of such a swaging machine is that uniform strength and external dimensions of successive swaged joints cannot be guaranteed owing to the manual nature of the operation.

The present invention has for its object a swaging machine of the rotary type which, unlike hitherto known rotary swagers, can be used for joining a sleeve to the two ends of a single length of wire or for joining together "ice the ends of two long lengths of wire or the like, for example the ends of two separate lengths of wire each wound on a drum, bobbin or the like.

According to the invention a swaging machine comprises a split circular ring, a revolving head mounted for rotation within said ring about an axis lying perpendicular to the plane of said ring and passing through the centre of the latter, said revolving head having a slot formed therein whereby a piece of material to be swaged may be passed from outside the head to the centre thereof, one or more hammers in said head each mounted for sliding movement relative to the head along a radius of said ring substantially in the plane of the latter, each hammer carrying a die at its inwardly directed end with the working face of the die lying adjacent the axis of revolution of said head, and cam means supported by said ring and engaged by the outwardly directed end of each hammer, the arrangement being such that upon rotation of the revolving head a reciprocating motion is imparted to each of said hammers through engagement of the latter with said cam means whereby each of said dies is caused to deliver a series of swaging blows to said piece of material positioned at the centre of the revolving head.

The split circular ring may be formed as a solid ring with a gap formed therein perpendicular to the plane of the ring. Alternatively the ring may consist of two or more parts which can be clamped together to form a complete circle or drawn apart to allow a piece of material to be swaged to be passed into the interior of the ring.

The invention will now be described in detail with reference to the accompanying drawings, in which Figure l is a diagrammatic view of one form of rotary swaging machine,

Figure 2 is a diagrammatic view of a second form of rotary swaging machine,

Figure 3 is a side elevation of a third form of rotary swaging machine,

Figure 4 is an end elevation of the rotary swaging machine according to Figure 3,

Figure 5 is a partly sectioned side elevation of part of Figure 4,

Figure 6 is a section on the line VI-VI of Figure 5, and

Figures 7 and 8 are detail views of parts of further forms of rotary swaging machines.

Referring to Figure l, the rotary swaging machine illustrated comprises a spilt ring 1 made of high tensile steel, for instance a nickel-chrome-molybdenum steel. The ring 1, which is made in one piece and has a portion cut away to form a gap 2, is mounted in a ring-formed housing 3 having a gap. 4 in alignment with the gap 2 of ring 1. The housing 3 is provided with a base 5 to form a support for the machine. A series of holes 6 is provided in the housing 3 for the purpose of receiving bolts which retain circular cover plates 7 on either side of the housing. In the drawing the front cover plate has been omitted for the sake of clarity. Each cover plate has a radially disposed slot 8, the two cover plates being assembled on the housing 3 so that the radial slots 8 are aligned with the gaps 2 and 4. Each cover plate 7 has a central circular aperture 9, which apertures receive circular bosses 10 mounted on the revolving head 11 of the machine. A strip of bearing metal 12 is interposed between each boss 10 and its associated aperture 9 so that the revolving head 11 is rotatably mounted in the two cover plates with its axis of revolution passing through the centre of ring 1. The revolving head 11 consists essentially of a circular plate provided with a radially disposed slot 13 and a diametrically disposed bore 14 of square or rectangular cross-section arranged substantially perpendicular to the slot 13. Two hammers 15 are slidably mounted in the bore 14, the said hammers having their outwardly directed ends rounded as at 16 and carrying dies 17 at their inwardly directed ends. The total length of the two hammers and the two dies 17 is equal tothe. diameter of the revolving head 11 so that when the two dies meet at the centre of the head 11 the outwardlydirected ends of the hammers 15 are flush with the peripheral surface of the revolving head. Shims 18 may be placed between the hammers and their associated dies so that the overall length of the hammers and dies may be adjusted slightly to take up wear. Cam means'in the form of a roller race is arranged between the outer surface of the revolving head 11 and the inner surface of ring 1. The roller race comprises a cage 19,

which subtends an angle of approximately 300 at the centre thereof, and a number of cylindrical steel rollers 26 which are rotatably mounted in the cage' The rollers 2%! have such a diameter that rotation of the revolving head 11 causes the rollers to rotate about their axes in the cage 19 and roll around the inside of ring 1. The rollers 20 are retained in position between head 11 and ring 1 by the cover plates 7. A toothed. gear quadrant 21 is rigidly secured to one of the bosses 10 externally of the cover plate 7 associated with the boss and is engaged by a further toothed gear quadrant 22 which is mounted on a pivot 23 and connected through a lever 24 to a crank mechanism 25. i

It will be apparent from the above description that rotation of crank mechanism 25 in the direction of the arrow will impart a reciprocating rotary movement to the revolving head 11 through the toothed gear quadrants 21, 22. The toothed gear quadrants are so dimensioned and positioned that the revolving head 11 is capable of rotating through approximately 100, i. e. 50f on either side of a mean position in which the slot 13 is aligned with the slots 8. The crank mechanism 25 is connected to a power source through a clutch (not shown) of such a type that the quadrant 22 is brought to rest in the same position each time the power source is disconnected. A pin and latch clutch of known type is suitable for this purpose.

The clutch is so arranged that the quadrant 22 comes to rest with the revolving head 11 in its mean position with slot 13 aligned with slots 8.

If a piece of material to be swaged is placed between the dies 17 and the crank mechanism 25 rotated, the reciprocating movement of head 11, causes the rounded ends of the hammers 15 to pass rapidly backwards and forwards over a number of the rollers 29. Asa result the hammers 15 are forced inwardly as they pass the rollers 29 and are returned outwardly by the resilience of the material being swaged as they travel between adjacent rollers.

The rollers 20 are so spaced in the cage 19 that the hammers 15 move inwardly and outwardly in unison to give the maximum swaging effect between the dies 17.

It will be appreciated that if the machine described above is employed to swage a sleeve to the two ends of a wire loop, for instance to form a bead wire for a pneumatic tyre, the completed wire loop can be removed from the machine throughthe slots 8 and 13 and the gaps 2 and 4. Pegs 26 are arranged between the cover plates 7 to limit the motion of cage 19 if the rollers 20 skid along the surface of ring 1 for any reason. These pegs 26 prevent the cage 19 from moving to a position where the rec path from the dies 17 to the periphery of housing 3 becomes obstructed.

Figure 2'shows a second form of rotary swaging machine in which the split ring consists of two semi-circular halves 27, 28 of high tensile steel. The ring half 27 is mounted in a housing member 29 and the ring half 28 is mounted in, a housing member '30 which is mounted on a pivot 31 supported by the member 29. The two housing members are clamped together by a bolt 32 or the like,

.removal of bolt 32 allowing the member to be rotated to the position 30' indicated in dotted lines. The housing member 29 comprises a base 33 which forms a support the revolving head 11 comes to rest with slot 13 aligned either side of the housing member. In the drawing the front bearing plate 34 has been omitted for the sake of clarity. The bearing plates 34 support a revolving head 11 for rotation about an axis passing through the centre of the ring halves 27, 28. The head 11 is of substantially the same construction as the revolving head 11 of Figure 1 and it comprises a radially disposed slot 13, a diametrically disposed bore 14, bosses 10 and a strip of bearing metal 12, all as described with reference to Figure 1. The bearing plates 34 each have a vertically arranged slot 35. Two hammers 36 are slidably mounted in the bore 14, the said hammers carrying dies 17 at their inwardly directed ends and small rollers 37 mounted on pivots 38 at their outwardly directed ends- The rollers 37 are adapted to bear against cam means interposed between the ring halves 27, 28 and the revolving head 11. The cam means is formed by the exposed surfaces of a plurality of steel rollers 39 pressed into the ring halves 27, 28. The fixedly mounted rollers 39, which comprise fixed cam surfaces, are arranged diametrically opposite one another and the overall length of the hammers 36 and the dies 17 is such that when the rollers 37 are both on the top dead centre of rollers 39 the faces of dies 17 meet. Shims 13 may be placed between the hammers 36 and their associated dies to take up wear of the hammers, dies, and rollers. A toothed gear ring 40, having a gap 41 aligned with slot 13, is rigidly secured to the revolving head 11. The toothed gear ring 40 meshes with two toothed wheels 42 which in turn mesh with a driving pinion 43.

It will be apparent from the above description that rotation of pinion 43 in the direction of the arrow will cause the revolving head 11 to rotate in the same direction through the toothed wheels 42 and the toothed gear ring 49. By providing two wheels 42 positioned as shown in the drawing a continuous drive is imparted to the revolving head despite the gap 41 in the gear ring 4%.

If a piece of material to be swaged is placed between the dies 17 and pinion 4-3 is rotated the hammers 36 are caused to reciprocate in the bore 14 by the rollers 37 travelling over the fixed rollers 33, and the material is subjected to a series of rapid swaging blows from the dies 17. If the machine is used to swage a sleeve to the two ends of a wire loop the completed loop may be removed from the machine by undoing bolt 32, moving housing member 30 to the position 30 and moving the loop through the slots 13 and 35, gap 41 and the gap between the two housing members 29, 3h. As in the case of the machine described with reference to Figure 1 a pin and latch clutch or the like (not shown) is arranged between the pinion 43 and the power source to insure that with the slots 35 each time the power source is disa connected from pinion 43.

Referrring'now to Figures 3 to 6, the rotary swaging machine illustrated comprises a base 44in which the two housing members 45, 46 of the machine are pivoted on a hollow pin 47.

The housing members are semicircular in shape and receive the split ring of the machine which consists of two semi-circular high tensile steel halves 48, 49. As shown more particularly in Figure 6 the ring halves are held'securely in the housing members by semicircular retaining plates 50.

tension on the clamping bolts .56, the levers 54 strike a pin 57 mounted on a stirrup 58 pivoted at 59 to the housing member 45. The stirrup 58 rotates in an anticlockwise direction about its pivot and pins 60 secured to the stirrup strike the clamping bolts 56 causing them to rotate in an anticlockwise direction about their pivotal mountings 61 on the levers 54. In this way the bolts 56 are thrown clear of the gap formed between the housing members 45, 46 when the latter separate. The opening and closing movements of housing members 45, 46 about the pin 47 are controlled by pneumatic cylinders 62, 63 pivotally mounted on the base 44.

Two bearing pillars 64 are mounted on the base 44. These pillars, which have been omitted from Figure for the sake of clarity, support the revolving head 65. The latter consists of two parts 66, 67 which are bolted together and have bosses 68, 69 thereon which are received by the bearing pillars 64 to mount the revolving head for rotation in the plane of the split ring. The revolving head is provided with a radially disposed slot 70 and a diametrically disposed bore 71 arranged substantially perpendicular to the slot 70. Two hammers 72 are slidably mounted in the bore 71, the said hammers carrying dies 73 at their inwardly directed ends and having their outwardly directed ends rounded as at 74.

The outwardly directed rounded ends of the hammers 72 bear against cam means interposed between the ring halves 48, 49 and the revolving head 65. The cam means consists of sixteen cylindrical steel rollers 75 located endwise between flanges 76 on the parts 66, 67 of the revolving head and bearing on their peripheral surfaces against the ring halves 48, 49 and the revolving head. As seen in Figure 5 the rollers 75 contact each other when the housing members 45, 46 are clamped together. A toothed gear ring 77 is rigidly secured to the revolving head 65, the said gear ring having a gap 78 therein in alignment with the slot 70. The gear ring 77 meshes with two toothed wheels 79 which in turn mesh with a driving pinion 80. The gears 79 and 80, which are shown diagrammatically in Figure 5, are enclosed by a casing 81. The pinion 80 is driven from a power source (not shown) by a shaft 82 through a pin and latch clutch 83 (see Figure 4). The clutch 83 ensures that the revolving head 65 comes to rest with slot 70 aligned with slots 84 in the bearing pillars 64 each time the power is disconnected from pinion 80.

It will be apparent from the above description that rotation of pinion 80 in one direction will cause the revolving head 65 to rotate in the same direction through the toothed wheels 79 and the toothed gear ring 77. By providing two wheels 79 positioned as shown in Figure 5 a continuous drive is imparted to the revolving head despite the gap 78 in the gear ring 77.

If a piece of material to be swaged is placed between the dies 73 and pinion 80 is rotated, the hammers 72 are caused to reciprocate in the bore 71 as the rounded ends of the hammers travel over the rollers 75 which are rolling round the internal surface of the split ring halves 48, 49. The material is thus subjected to a series of rapid swaging blows from the dies 73. If the machine is used to swage a sleeve to the two ends of a wire loop, the completed loop may be removed from the machine by releasing the toggle clamp 51, pivoting the housing members 45, 46 about the pin 47 by means of the pneumatic cylinders 62, 63 and then moving the loop through the slots 70 and 84, gap 78 and the gap between the opened housing members 45, 46. As previously described the releasing of clamp 51 moves the clamping bolts 56 clear of the gap between the opened housing members so that there is a clear path between the members for the passage of the loop. When the housing members 45, 46 are opened, the rollers 75 rest together between the revolving head 65 and the ring halves 48, 49 and as a result do not obstruct the entrance to slot 70. It has been found in practice that a roller 75 does not lodge in the slot 70 when the housing members are 6 opened and that there is no need to make any special provision for dislodging a roller from the slot.

Provision is made for urging the hammers 72 outwardly when the housing members are opened. To this end each hammer is slidably mounted in a sleeve 85 (see Figure 5), the two sleeves being slidably mounted in bore 71. A pin 86 mounted in the revolving head 65 passes through a flange 87 on sleeve 85 and is provided at its free end with a stop 88. A coil spring 89 is mounted between flange 87 and the revolving head. When the housing members 45, 46 are opened the spring 89 urges the sleeve 85 outwardly and a shoulder 90 on the latter engages the die 73 and moves the die and hammer with it. The outward movement of the sleeve 85 is limited by the flange 87 engaging stop 88.

A quick access door 91 is provided in the revolving head 65 (see Figures 5 and 6). Removal of this door allows inspection or adjustment of the dies 73. The door 91, which is suitably secured to the revolving head by a bayonet type joint, is provided With a slot 92 in alignment with the slot 70.

Figures 3 and 4 show a pneumatically operated device for feeding a piece of material to be swaged through the dies 73. The device comprises two clamping means 93 slidably mounted on platforms 94, there being one clamping means on each side of the revolving head 65. Each clamping means has a pair of jaws 95 which can be opened and closed through a toggle mechanism 96. The toggle mechanisms are actuated by the piston rods 98 of pneumatic cylinders 97. The two clamping means 93 are traversed along their platforms 94 by toothed quadrants 99 engaging racks 100 on the underside of the clamping means. The quadrants 99 are mounted on pivots 101 and are rocked by a rod 102 which passes through the hollow pin 47 of the housing members 45, 46 and is connected to a pneumatic cylinder 103. Connection between rod 102 and the quadrants 99 is effected by pins 104 on the rod 102 engaging a slotted hole 105 in the lower extremity of each quadrant.

The above described machine is operated as follows:

From the position shown in Figures 3 and 4 the housing members 45, 46 are first opened by releasing the toggle clamp 51 by means of pneumatic cylinder 53 and then supplying compressed air to the pneumatic cylinders 62, 63. A piece of material to be swaged is then passed through the opening between the housing members 45, 46, through slots 84, gap 78, and slots 70 and 92 until it rests between the jaws 95 of the two clamping means 93 in which position it passes between the two dies 73. Compressed air is then supplied to the pneumatic cylinders 97 to operate the toggle mechanisms 96 so that the material is gripped by the clamping means 93. At the same time the housing members 45, 46 are moved to the closed position by means of the pneumatic cylinders 62, 63 and are then clamped by the toggle mechanism 51 by means of the pneumatic cylinder 53. The clutch 83 is then engaged to rotate the revolving head 65 and at the same time compressed air is supplied to pneumatic cylinder 103 to traverse the clamping means 93 along their platforms 94. When the workpiece has been traversed through the dies 73 the supply of cornpressed air to cylinder 103 is cut 0E, the clutch 83 is disengaged, the clamping means 93 are released, toggle mechanism 51 is released and the housing members 45, 46 are opened to release the material from the machine. Finally the clamping means 93 are traversed back to their original positions on platforms 94 by means of cylinder 103 in readiness for the next swaging operation.

In all of the above described machines the dies are of course provided with a lead-in according to normal practice.

A swaging machine according to the present invention can of course be used for all manner of swaging operations but it will be appreciated that owing to its novel 7 a construction it is particularly suited for swaging operations on wires, bars and rod formed material in the shape of loops or rings, or on material of great length which in the hitherto known rotary swaging machines would have to be fed through the dies for a considerable distance befor commencing the swage.

In addition to the use of the machine in the swaging of a sleeve to the two ends of a length of wire, wire strand or wire rope intended for use as a bead wire for tyres,

.mention may also be made of swaging a sleeve to the ends of stranded wire rope. A particularly useful application of the latter kind is in the case of the construction of submarine nets where hitherto the various wire loops of which the nets are constructed have been spliced together by hand. Another valuable application of the machine is in 'the'connection together of the long lengths of wire employed in the manufacture of pre-cast concrete and concrete pipes. 7

The degree of swaging performed by the machine will of course be adapted to the particular purpose for which the machine is intended. Thus the duration of the swaging operation and the amplitude of the die movement will be arranged to suit the material being'swaged and the operation being effected.

Although in the embodiments of the invention described above with reference to the drawings two dies have been specified in each case, it is to be understood that a swaging machine according to the invention can comprise one movable die only which is adapted to cooperate with a fixed die, or it can comprise more than two dies the revolving head having a corresponding number of hammers. Thus Figure 7 shows a cross-section of a revolving head suitable for use in the machines according to Figure l or Figures 3 to 6 in which there is only one movable die 107 which co-operates with a fixed die or anvil 106. Figure 8 shows a cross-section of a revolving head suitable for use in machines similar to that shown in Figure l or Figures 3 to 6 in which there are three hammers 108 with associated, dies 109. With a revolving head of this nature'the cam means interposed between the revolving head and the split ring is so dimensioned that all three hammers move in and out in unison.

Again a swaging machine according to the invention may comprise a split ring consisting of more than two ring portions. Thus the split ring in the machine according to Figure 5 may consist of three ring portions, one rigidly secured to the base 44 and the other two hinged to the first by pins similar to pin 47.

We claim: 7

l. A swaging machine comprising a housing having a cylindrical opening therein, a pair of fixedly mounted rigid supports disposed adjacent each end of said opening, an integral, substantially cylindrical head member mounted coincident with the central axis of said opening and journalledtin said supports, said head having a slot formed therein extending radially outwardly from said central axis to the outer periphery of said head, said head carrying swaging means radially disposed with respect to 7 said head, said housing being split adjacent said opening,

, and journalled in said supports, said headhaving a slot formed therein extending radially outwardly from said central axis to the outer periphery of said head, said head carrying swaging means radially disposed with respect tosaid .head, said housing being divided into two sections with at least one of said sections being movable away from the said head about an axis substantially parallel to said central axis for introduction of material to be swaged into said slot, means for clamping said sections together, and cam means disposed along at least a portion of the outer periphery of said opening, the arrangement being such that as said head is motivated, said swaging means is actuated by said cam means to swage the material received in said slot.

3. A swaging machine comprising a housing having a cylindrical opening therein, a pair of fixedly mounted rigid supports disposed adjacent each end of said opening, an integral, substantially cylindrical head member mounted coincident with the central axis or" said opening and journalled in said supports, said head having a slot formed therein extending radially outwardly from said central axis to the outer periphery of said head, said head carrying swaging means radially disposed with respect to said head, said housing being divided into two sections with at least one of said sections being movable away from said head about an axis substantially parallel to said central axis for introduction of material to be swaged into said slot, means for clamping said sections together, cam means disposed along at least a portion of the outer periphery of said opening, a driven gear fixed to said head, said gear having a gap therein aligned with said slot, and a pair of spaced apart driving gears cooperating with said driven gear to continuously rotate said head, the arrangement being such that as said head is rotated, said swaging means is actuated by said cam means to swage the material received in said slot.

4. A swaging machine comprising a housing having a cylindrical opening therein, a pair of fixedly mounted rigid supports disposed adjacent each end of said opening, an integral, substantially cylindrical head member mounted coincident with the central axis of said opening and journalled in said supports, said head having a slot formed therein extending radially outwardly from said central axis to the outer periphery of said head, said head carrying swaging means radially disposed with respect to said head, said swaging means comprising a pair of hammers oppositely disposed with respect to each other and operable in a plane which is perpendicular with respect to the plane of said slot, said housing being split adjacent said opening for introduction of material to be swaged into said slot, cam means disposed along at least a portion of the outer periphery of said opening, said cam means comprising a plurality of rollers rotatably mounted in a cage, and a segmental gear fixed to said head for actuation of said head, the arrangement being such that as said head is motivated, said swaging means is actuated by said cam means to swage the material received in said slot. 7

5. A swaging machine comprising a housing having a cylindrical opening therein, a pair of fixedly mounted rigid supports disposed adjacent each end of said opening, an integral, substantially cylindrical head member mounted coincident with the central axis of said opening and journalled in said supports, said head having a slot formed therein extending radially outwardly from said central axis to the outer periphery of said head, said head carrying swaging means radially disposed with respect to said head, said swaging means comprising a pair of hammers oppositely disposed with respect to each other and operable in a plane which is perpendicular with'respect to the plane of said slot, cam means disposed along at least a' poriton of the outer periphery of said opening, said cam means comprising a plurality of fixed cam surfaces, the opposed ends of said hammers carrying roller means for cooperation with said surfaces, said housing being split adjacent said opening for introduction of material to be swaged into said slot, a driven gear fixed to said head, said gear having a gap therein aligned with said slot, and a pair of spaced apart driving gears cooperating with said driven gear to continuously rotate said head, the arrangement being such that as said head is rotated, said swaging means is 9 actuated by said cam means to swage the material received in said slot.

6. A swag-ing machine comprising a housing having a cylindrical opening therein, a pair of fixedly mounted rigid supports disposed adjacent each end of said opening, an integral, substantially cylindrical head member mounted coincident with the central axis of said opening and journalled in said supports, said head having a slot formed therein extending radially outwardly from said central axis to the outer periphery of said head, said outer periphery of said head being grooved, said head carrying swaging means radially disposed with respect to said head, said swaging means comprising a pair of hammers oppositely disposed with respect to each other and operable in a plane which is perpendicular with respect to the plane of said slot, the inwardly directed ends of said hammers carrying swaging dies and the outwardly directed ends of said hammers being rounded, cam means disposed along at least a portion of the outer periphery of said opening, said cam means comprising a plurality of freely movable rollers, said housing being split adjacent said opening for introduction of material to be swaged into said slot, said housing being divided into two sections with at least one of said sections being movable away from said head about an axis substantially parallel to said central axis, said sections being movable with respect to each other about said second mentioned axis, each of said sections comprising a semi-circular member, said rollers being disposed partially within said groove and between said groove and the adjacent portion of the respective semi-circular mernhere, said semi-circular members and said groove acting as an outer and inner race, respectively, for said rollers, and means for clamping said sections together, the arrangement being such that as said head is motivated, said swaging means is actuated by said cam means to swage the material received in said slot and when said sections are separated, said rollers are adapted to group together on each side of said head so that access may be had to said slot.

7. A swaging machine comprising a housing having a cylindrical opening therein, a pair of fixedly mounted rigid supports disposed adjacent each end of said opening, an integral, substantially cylindrical head member mounted coincident with the central axis of said opening and journalled in said supports, said head having a slot formed therein extending radially outwardly from said central axis to the outer periphery of said head, said outer periphery of said head being grooved, said head carrying swaging means radially disposed with respect to said head, said swaging means comprising a pair of hammers oppositely disposed with respect to each other and operable in a plane which is perpendicular with respect to the plane of said slot, the inwardly directed ends of said hammers carrying swaging dies and the outwardly directed ends of said hammers being rounded, cam means disposed along at least a portion of the outer periphery of said opening, said cam means comprising a plurality of freely movable rollers, said housing being split adjacent said opening for introduction of material to be swaged into said slot, said housing being divided into two sections with at least one of said sections being movable away from said head about an axis substantially parallel to said central axis, said sections being movable with respect to each other about said second mentioned axis, each of said sections comprising a semi-circular member, said rollers being disposed partially within said groove and between said groove and the adjacent portion of the respective semi-circular members, said semi-circular members and said groove acting as an outer and inner race, respectively, for said rollers, means for clamping said sections together, a driven gear fixed to said head, said gear having a gap therein aligned with said slot, and a pair of spaced apart driving gears cooperating with said driven gear to continuously rotate said head, the arrangement being such that as said head is rotated, said swaging means is actuated by said cam means to swage the material received in said slot, and when said sections are separated, said rollers are adapted to group together on each side of said head so that access may be had to said slot.

References Cited in the file of this patent UNITED STATES PATENTS 1,322,584 Kraft Nov. 25, 1919 1,765,758 Cameron June 24, 1930 1,963,942 Flynn June 19, 1934 

